MRF187 Datasheet, PDF (4/8 Pages) Motorola, Inc – RF POWER FIELD EFFECT TRANSISTORS

TYPICAL CHARACTERISTICS
40
0
35
η_D
-5
30
-10
25
IRL
-15
V_DD = 26 V
20 _{IDQ = 550 mA, Pout = 85 WATTS (PEP)}
-20
TWO-TONE MEASUREMENT, 100 kHz TONE SPACING
15
-25
G_ps
10
-30
5
IMD
-35
0
-40
865
870
875
880
885
890
895
f, FREQUENCY (MHz)
Figure 2. Class AB Broadband Circuit Performance
-10
V_DD = 26 V
-20 ^IDQ ^{= 550 mA}
f = 880 MHz
TWO-TONE MEASUREMENT,
-30 _{100 kHz TONE SPACING}
-40
3rd Order
-50
-60
5th Order
7th Order
-70
0.1
1.0
10
100
P_out, OUTPUT POWER (WATTS) PEP
Figure 3. Intermodulation Distortion Products
versus Output Power
160
140
G_ps
16
P_out
14
120
12
100
V_DD = 26 V
10
I_DQ = 550 mA
80
f = 880 MHz
8
TWO-TONE MEASUREMENT,
60
100 kHz TONE SPACING
6
40
4
η_D
20
2
0
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
P_in, INPUT POWER (WATTS)
Figure 4. Class AB Parameters
versus Input Power
17
1300 mA
16
1100 mA
900 mA
15
700 mA
14
550 mA
13 _{400 mA}
12
250 mA
11
10
0.1
V_DD = 26 V
f = 880 MHz
TWO-TONE MEASUREMENT,
100 kHz TONE SPACING
1.0
10
100
P_out, OUTPUT POWER (WATTS) PEP
Figure 5. Power Gain versus Output Power
-Ă10
V_DD = 26 V
f = 880 MHz
-Ă20 _{TWO-TONE MEASUREMENT,}
100 kHz TONE SPACING
-Ă30
250 mA
1100 mA
-Ă40
400 mA
900 mA
-Ă50
1300 mA
550 mA
700 mA
-Ă60
0.1
1.0
10
100
P_out, OUTPUT POWER (WATTS) PEP
Figure 6. Intermodulation Distortion
versus Output Power
MRF187 MRF187R3 MRF187SR3
4
MOTOROLA RF DEVICE DATA